Abstract
Two Victorian brown coal samples, a run-of-mine Loy Yang coal (LY) and a Loy Yang light lithotype (LL), were subjected to pyrolysis at 420–460 °C and 330–460 °C, respectively, under a continuous nitrogen flow. The process produced condensed products in two phases, oil and aqueous, as well as solid residue and gaseous products. An increase in the condensed product yields with increasing temperature was observed for both coals, with LL achieving higher yield than LY at a given temperature (e.g. 26.3 wt% vs 19.5 wt% at 460 °C). The condensed products were characterized by 1H and 13C NMR as well as GC–MS. Abundant triterpenoid polycyclics and aliphatic hydrocarbons were found in the oils from both coals produced at lower temperatures, whilst the yield of aromatics significantly increased with increasing pyrolysis temperature. Analyses of the solid residues by FTIR, solid state 13C NMR and flash pyrolysis GC–MS (Py-GC–MS) also revealed an increasing aromaticity of the residues at higher temperatures. Py-GC–MS analysis identified compound groups released by flash pyrolysis at 650 °C and the results were found to correspond to those of GC–MS for the oil.
| Original language | English |
|---|---|
| Pages (from-to) | 1422-1430 |
| Number of pages | 9 |
| Journal | Fuel |
| Volume | 234 |
| DOIs | |
| Publication status | Published - 15 Dec 2018 |
Keywords
- Brown coal
- Crude oil
- Flash pyrolysis GC–MS
- Flow through pyrolysis
Cite this
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Characterisation of the products of low temperature pyrolysis of Victorian brown coal in a semi-continuous/flow through system. / Qi, Ying; Hann, Will; Subagyono, Dirgarini J.N.; Fei, Yi; Marshall, Marc; Jackson, W. Roy; Patti, Antonio F.; Chaffee, Alan L.
In: Fuel, Vol. 234, 15.12.2018, p. 1422-1430.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Characterisation of the products of low temperature pyrolysis of Victorian brown coal in a semi-continuous/flow through system
AU - Qi, Ying
AU - Hann, Will
AU - Subagyono, Dirgarini J.N.
AU - Fei, Yi
AU - Marshall, Marc
AU - Jackson, W. Roy
AU - Patti, Antonio F.
AU - Chaffee, Alan L.
PY - 2018/12/15
Y1 - 2018/12/15
N2 - Two Victorian brown coal samples, a run-of-mine Loy Yang coal (LY) and a Loy Yang light lithotype (LL), were subjected to pyrolysis at 420–460 °C and 330–460 °C, respectively, under a continuous nitrogen flow. The process produced condensed products in two phases, oil and aqueous, as well as solid residue and gaseous products. An increase in the condensed product yields with increasing temperature was observed for both coals, with LL achieving higher yield than LY at a given temperature (e.g. 26.3 wt% vs 19.5 wt% at 460 °C). The condensed products were characterized by 1H and 13C NMR as well as GC–MS. Abundant triterpenoid polycyclics and aliphatic hydrocarbons were found in the oils from both coals produced at lower temperatures, whilst the yield of aromatics significantly increased with increasing pyrolysis temperature. Analyses of the solid residues by FTIR, solid state 13C NMR and flash pyrolysis GC–MS (Py-GC–MS) also revealed an increasing aromaticity of the residues at higher temperatures. Py-GC–MS analysis identified compound groups released by flash pyrolysis at 650 °C and the results were found to correspond to those of GC–MS for the oil.
AB - Two Victorian brown coal samples, a run-of-mine Loy Yang coal (LY) and a Loy Yang light lithotype (LL), were subjected to pyrolysis at 420–460 °C and 330–460 °C, respectively, under a continuous nitrogen flow. The process produced condensed products in two phases, oil and aqueous, as well as solid residue and gaseous products. An increase in the condensed product yields with increasing temperature was observed for both coals, with LL achieving higher yield than LY at a given temperature (e.g. 26.3 wt% vs 19.5 wt% at 460 °C). The condensed products were characterized by 1H and 13C NMR as well as GC–MS. Abundant triterpenoid polycyclics and aliphatic hydrocarbons were found in the oils from both coals produced at lower temperatures, whilst the yield of aromatics significantly increased with increasing pyrolysis temperature. Analyses of the solid residues by FTIR, solid state 13C NMR and flash pyrolysis GC–MS (Py-GC–MS) also revealed an increasing aromaticity of the residues at higher temperatures. Py-GC–MS analysis identified compound groups released by flash pyrolysis at 650 °C and the results were found to correspond to those of GC–MS for the oil.
KW - Brown coal
KW - Crude oil
KW - Flash pyrolysis GC–MS
KW - Flow through pyrolysis
UR - http://www.scopus.com/inward/record.url?scp=85051368722&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2018.07.109
DO - 10.1016/j.fuel.2018.07.109
M3 - Article
AN - SCOPUS:85051368722
VL - 234
SP - 1422
EP - 1430
JO - Fuel
JF - Fuel
SN - 0016-2361
ER -